Self-piercing nut



FIG. 1 is a perspective view of the self-piercing nut;

FIG. 2 is a perspective view taken bottom side thereof;

FIG. 3 is a front elevation thereof, the rear elevation being identical;

FIG. 4 is a right-side elevation thereof, the left-side elevation being identical;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a cross section taken along the line 7—7 in FIG. 5; and,

FIG. 8 is a side elevation taken along the line 8—8 in FIG. 5 

The ornamental design for the a self-piercing nut, as shown and described. 